But the singer-actress says she's "much happier and healthier" since treatment
Demi Lovato is back with a successful album, even topping former flame Joe Jonas, but she hasn't forgotten her past mistakes.
Are they new friends? Chace Crawford and Joe Jonas were pretty chatty at the CK One Shock Launch party at New York's Gunbar. The guys discussed their plans for the week, and the Gossip Girl star also raved about how much he loves the Big Apple. Jonas, meanwhile, also chatted up model-singer Sky Ferreira, and he wasn't shy, according to an onlooker, who said the two talked about music and fashion. - Carlos Greer
⢠File under: friendly exes. Joe Jonas and Ashley Greene seemed at ease hanging out and taking in the party scene at Las Vegas's Tao Nightclub, which was celebrating its 1000th night in business with a star-studded bash hosted by Jay-Z. Jonas dined with friends at the downstairs restaurant before heading up to the club, where he joined a table with Cheryl Burke, her DWTS partner Rob Kardashian and Greene, who was hanging out as part of the group. Meanwhile, up in a skybox: Kelly Clarkson and her band had a prime view of the dancefloor below - as well as bottle service.
The musician enjoys a pool party before performing at a nightclub in Sin City
The pop star takes a break from touring to boat with Jason Trawick and sons off Long Island, N.Y.
"It's a dream come true," says Jonas, who admits he had a childhood crush on her
The two goofed off in a photo booth and chatted it up in the stands Saturday
⢠Joe Jonas was in Chicago for the B96 Summer Bash - but the singer made time for the club scene. Jonas partied with DJ Syphe at club The Underground, where he debuted his new dance song, "See No More," to a packed house. Days before trekking to the Windy City, Jonas stepped out for a cheeseburger dinner at West Hollywood's Chateau Marmont. He was in good spirits as he drank a soda and enjoyed his meal with two guy friends, according to an onlooker.
The singer enters unchartered territory - in the studio without his brothers
⢠That could have been awkward! Joe Jonas just missed ex Ashley Greene while arriving at the vaudeville show Beacher's Madhouse inside the Hollywood Roosevelt Hotel. The singer showed up around 1 a.m., just a few minutes after Greene's departure, and seemed more focused on his entourage than the actual show, which he caught the week before. Greene, meanwhile, sat atop the banquette watching the on-stage shenanigans - which includes dancing Oompa Loompas, live monkeys, goats, and exotic burlesque dancers - as her rumored beau Chris Evans sat nearby.
⢠Zac Efron and Joe Jonas - and their entourages - shared a prime table during a vaudeville-inspired performance by Beacher's Madhouse at the Hollywood Roosevelt Hotel. The guys greeted each other, then basically stuck to themselves and their own group of friends. Jonas sipped a cocktail with his pals - and occasionally snapped pictures with his phone. The show's producer David Arquette worked the room, walking around and making sure that everyone was being taken care of.
The Jonas brothers flaunt their defined abs on the beach
The Twilight actress and the singer had been dating since last summer
⢠With girlfriend Ashley Greene in Vancouver filming Breaking Dawn, Joe Jonas enjoyed a guys' night out at Trousdale in L.A. Huddled around a table in the back room, the musician was having a blast, cracking jokes with his group of pals, which included Evan Ross. Also there: Glee's Mark Salling, who was seated at a nearby table.
"He knows what I like," the actress says of the Chanel charm bracelet she received for her birthday
Plus: Joe Jonas checks out some artwork and more star sightings
The "friendly" couple eat out in Baton Rouge to the delight of local fans
⢠Before heading to Florida for a Walt Disney World vacation, an attentive Joe Jonas was taking good care of girlfriend Ashley Greene during their meal together at Cleo in L.A. "He was very affectionate and sweet with Ashley," an onlooker tells us. The two got cozy on banquettes at the back of the restaurant as they enjoyed the Mediterranean-inspired food Jonas ordered for them.
Witnesses spot the pair, in town to film Breaking Dawn, acting like "a couple in love"
The chefs have to cook for Joe Jonas - and lots of children - in an all-night challenge
⢠Ashley Greene and Joe Jonas stepped out for a hot date at Katsuya Hollywood. The new couple grabbed a private table hidden behind curtains, but that didn't stop fellow diners from spotting them. "If Ashley sat any closer to Joe, she would have been in his lap," one onlooker said. The pair did enjoy a bunch of dishes, including yellowtail with jalepeño, all washed down with sake.
The singer and his Les Miserables's Samantha Barks played their relationship coy - but seemed cozy in London
"He hasn't been this into a girl in a long time," a source tells PEOPLE of the couple
Plus: Sarah Jessica Parker steps out with her girls
"I know that he has the best intentions," the Camp Rock 2 star says of her ex
Demi and Joe Jonas cause fans to shriek over their romantic duet after New York screening
"I think touring together will be a lot of fun," he says. "But yeah, I'm just a single dude about to go on tour"
Jonas tells PEOPLE it was "my choice" to split; Lovato denies they broke up by the phone
But they won't be far from each other this summer - they're still touring together
It beats texting, and "I can have him hold my hand when I'm tired," she says of this summer's plans
The on-again, off-again couple broke up last month - but maintain a "super strong connection"
The teen star says dating her best friend "is amazing" and "a great feeling"
The couple also reveal they're clumsy - and guess who spends more time getting makeup done?
The newest celeb couple, dubbed "Jemni," get support online
"He's perfect," she says of her of Camp Rock 2 costar
The singer says his best Valentine's Day included a surprise delivery of the sweet treats
"We are happy being a band and it's what we've always wanted to do," the rocker tells PEOPLE
Plus, he has his sights set on movie stardom!
"The romance, the singing and dancing - everything is bigger and better," Jonas says of the Disney Channel sequel
The stars reveal where they place their Twilight allegiance
The singer playfully gets back at Joe Jonas and Kanye West - and blows a kiss to Taylor Lautner
"He's incredible, but we don't have feelings for each other in that way ... I wouldn't lie about that," she Tweets
Though they never confirmed they were dating, the actress and the singer have broken up
Joe and Nick open up to Larry King, while Kevin dodges a marriage question
The onetime couple release tracks seemingly about each other - vote for your fave
⢠Melanie Brown and hubby Stephen Belafonte, in the
mood to party at L.A. hot spot MyHouse. The Spice Girl was talking to everyone
as the bartender delivered her group drinks from the bar. Meanwhile, Brown - who was cracking up her friends - remained engrossed in conversation after hanging out for less than an hour.
The Jonas Brother is the latest to attempt Beyoncé's choreography on YouTube
"Love happens when you're not looking for it," says the country music singer
The singer ponders his acting future - and dreams about becoming an author
Writing about her split with Joe Jonas "is the only way I know how to do things," she says
And the Twilight star clears up rumors that he's romantically involved with Camilla Belle
The Jonas Brothers and Demi Lovato get ready to play the Inauguration
Hint: The 19-year-old singer's dream date is a Gossip guy
The man who inspired "Hey Stephen" is Love and Theft singer Stephen Barker Liles
Coming off a break-up with Joe Jonas, the country star says she has people to count on "even when it's raining"
"I never cheated on a girlfriend," the teen idol tells fans in a heartfelt message
The 19-year-old star is dating 10,000 BC actress Camilla Belle
The country star tells PEOPLE of her song about "watching somebody completely fade away in a relationship"
In an election year, the 18-year-old singer is passionate about "political discussions" and, yes, boys
"It's going to be about us as a band" – and taking out the garbage, says Joe Jonas
The country singer warns would-be heartbreakers, "I [will] write a song about you"
The middle Jonas Brother shows up at the country star's concert with Rascal Flatts in West Palm Beach
Plus the guys talk about their VMA competition and the new Jonas show
"Don't worry," brother Kevin assures legions of female fans, "there were lots of helmets given"
"A second movie would be great," Joe Jonas says of the Disney Channel musical
Yes, she did graduate ("really cool"), but no, she's not dating a Jonas Brother!
The Jonas Brothers celebrate and also prepare to perform at the MTV Video Music Awards
People. Tiger Beat. Miss Teen USA. Nickelodeon. And Disney, of course.
"We got her back," Joe Jonas says after candid pics of Cyrus hit the Web
Ellen DeGeneres wants to make sure pop star Joe Jonas
– who took a spill onstage last year – is safe.
The Jonas Brothers' Joe Jonas landed in the emergency room Saturday night after taking a small spill following a show in Atlantic City.
The Jonas Brothers shed a little blood at the American Music Awards, but it was worth it.